package com.heima.gateway.filer;

import com.heima.gateway.util.AppJwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Service;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Service
@Slf4j
public class AuthFiler implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();
        String path = request.getURI().getPath();
        if(path.contains("/login")){
          return   chain.filter(exchange);
        }
        String token = request.getHeaders().getFirst("token");
        if(token!=null){
            try {
                Claims claims = AppJwtUtil.getClaimsBody(token);
                int i = AppJwtUtil.verifyToken(claims);
                if(i==0||i==-1){
                    Object userId = claims.get("userId");
                    request.mutate().header("userId",userId.toString());
                    return chain.filter(exchange);

                }
            } catch (Exception e) {
                log.error(e.getMessage());

                e.printStackTrace();
            }

        }
//        401 未授权
        response.setStatusCode(HttpStatus.UNAUTHORIZED);
        return response.setComplete();
    }

    @Override
    public int getOrder() {
        return 0;
    }
}
